Name
jrunscript - run a command-line script shell that supports interactive and batch modes
Synopsis
Note:
This tool is experimental and unsupported. It is deprecated and will be removed in a future release.
jrunscript [options] [arguments]
- options
-
This represents the
jrunscriptcommand-line options that can be used. See Options for the jrunscript Command. - arguments
- Arguments, when used, follow immediately after options or the command name. See Arguments.
Description
The jrunscript command is a language-independent
command-line script shell. The jrunscript command supports
both an interactive (read-eval-print) mode and a batch (-f
option) mode of script execution. By default, JavaScript is the language
used, but the -l option can be used to specify a different
language. By using Java to scripting language communication, the
jrunscript command supports an exploratory programming
style.
If JavaScript is used, then before it evaluates a user defined
script, the jrunscript command initializes certain built-in
functions and objects, which are documented in the API Specification for
jrunscript JavaScript built-in functions.
Options for the jrunscript Command
-cppath or-classpathpath- Indicates where any class files are that the script needs to access.
-Dname=value- Sets a Java system property.
-Jflag-
Passes flag directly to the Java Virtual Machine where the
jrunscriptcommand is running. -llanguage-
Uses the specified scripting language. By default, JavaScript is used.
To use other scripting languages, you must specify the corresponding
script engine's JAR file with the
-cpor-classpathoption. -escript- Evaluates the specified script. This option can be used to run one-line scripts that are specified completely on the command line.
-encodingencoding- Specifies the character encoding used to read script files.
-fscript-file- Evaluates the specified script file (batch mode).
-f -- Enters interactive mode to read and evaluate a script from standard input.
-helpor-?- Displays a help message and exits.
-q- Lists all script engines available and exits.
Arguments
If arguments are present and if no -e or -f
option is used, then the first argument is the script file and the rest
of the arguments, if any, are passed as script arguments. If arguments
and the -e or the -f option are used, then all
arguments are passed as script arguments. If arguments -e
and -f are missing, then the interactive mode is used.
Example of Executing Inline Scripts
jrunscript -e "print('hello world')"
jrunscript -e "cat('http://www.example.com')"
Example of Using Specified Language and Evaluate the Script File
jrunscript -l js -f test.js
Example of Interactive Mode
jrunscript
js> print('Hello World\n');
Hello World
js> 34 + 55
89.0
js> t = new java.lang.Thread(function() { print('Hello World\n'); })
Thread[Thread-0,5,main]
js> t.start()
js> Hello World
js>
Run Script File with Script Arguments
In this example, the test.js file is the script file.
The arg1, arg2, and arg3
arguments are passed to the script. The script can access these
arguments with an arguments array.
jrunscript test.js arg1 arg2 arg3